My internet cuts out constantly. I have called Comcast Xfinity over 15 times in the past month about this issue and have had three technicians visit recently (including two in the past 1-2 weeks). Both times, the technicians thought they had identified and fixed the problem. However, the problem persists. I have wasted countless hours on the phone with customer service, going through the same steps, over and over and over.
Comcast customer service has been very unhelpful (however, the technicians who have visited have all been great). They say they cannot schedule another visit because it is an "internal" issue - however, the last technician who visited measured the signal *inside* my house and didn't find any problems. Instead, he said that Comcast made an error when our neighbors (who just moved in) recently connected their cable TV. Every time I call customer service, it is a different story.
Anyway, I thought I would try to debug the problem here. If anyone can help at all, I would really appreciate it. I will copy my modem log below, but if there's anything else that would be useful, please let me know. We also purchased a new wireless router, but this didn't fix the problem. Thank you.
May 22 2020 00:10:33
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 22 2020 00:10:22
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 22 2020 00:06:31
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:18:49
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:18:29
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:18:29
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:17:34
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:17:29
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:04:15
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:04:10
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:03:56
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:03:56
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 23:03:43
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 18:50:39
5-Warning
Z00.0
MIMO Event MIMO: Stored MIMO=-1 post cfg file MIMO=-1;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:22
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
Jan 01 1970 00:00:18
6-Notice
N/A
Cable Modem Reboot due to power reset ;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 18:46:44
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 18:46:24
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 18:36:35
3-Critical
R02.0
No Ranging Response received - T3 time-out;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
May 21 2020 18:35:25
3-Critical
R07.0
Unicast Ranging Received Abort Response - initializing MAC;CM-MAC=20:3d:66:05:25:77;CMTS-MAC=00:87:31:90:0a:3f;CM-QOS=1.1;CM-VER=3.0;
Here is my signal information:
Downstream
Bonding Channel Value
Channel ID
33
34
35
36
37
38
39
40
Frequency
651000000 Hz
657000000 Hz
663000000 Hz
669000000 Hz
675000000 Hz
681000000 Hz
687000000 Hz
693000000 Hz
Signal to Noise Ratio
35 dB
35 dB
35 dB
34 dB
33 dB
32 dB
33 dB
34 dB
Downstream Modulation
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
QAM256
Power Level
The Downstream Power Level reading is a snapshot taken at the time this page was requested. Please Reload/Refresh this Page for a new reading
-11 dBmV
-11 dBmV
-11 dBmV
-13 dBmV
-14 dBmV
-15 dBmV
-14 dBmV
-14 dBmV
Upstream
Bonding Channel Value
Channel ID
2
4
3
1
Frequency
30100000 Hz
17300000 Hz
23700000 Hz
36500000 Hz
Ranging Service ID
598
598
598
598
Symbol Rate
5.120 Msym/sec
5.120 Msym/sec
5.120 Msym/sec
5.120 Msym/sec
Power Level
47 dBmV
49 dBmV
49 dBmV
47 dBmV
Upstream Modulation
[2] QPSK [1] 16QAM [3] 64QAM
[2] QPSK [1] 16QAM [3] 64QAM
[2] QPSK [1] 16QAM [3] 64QAM
[2] QPSK [1] 16QAM [3] 64QAM
Ranging Status
Success
Success
Success
Success
Signal Status (Codewords)
Bonding Channel Value
Channel ID
33
34
35
36
37
38
39
40
Total Unerrored Codewords
1079451742
1078257584
1078221846
1078220988
1078180931
1078204285
1078251527
1078250466
Total Correctable Codewords
3029
5771
6324
8403
9739
6576
787
1685
Total Uncorrectable Codewords
12392
27251
33863
53163
69066
47620
3851
7646
... View more